Possible Clues:

• Adult insect? The writer’s not entirely enthralled
• Maybe monthly entering moon’s final stage
• Butterfly's stage
• Shakespearean villain trapping maiden for mature monarch, say
• Try to follow one old lady bug
• Your compiler’s turn to catch a butterfly, perhaps
• This writer's past an idealised representation
• One’s past the final stage
• Mature insect in yours truly’s past?
• Short picture -- origin of only adult version